Hmmmm, small observations:The description has 13 question marks ?????????????, which could be random or could be a fill-in-the-blank puzzle like "myeternalsong" (she does conclude "my eternal song is real")

There are cars driving by somewhere off-camera in the background.

There is some kind of empty bottle on the ground behind her clearly in the frame when she is hearing her eternal song.

She met Jenny in the mess tent for cornflakes and coffee before the circle meeting - maybe some kind of drug was slipped to her. Bree certainly was crazy for awhile after returning from HOO camp - missing her eternal fix?